Typewriting machine



March 2,1926. 1,575,559

A. B- ELY TYPEWRITING MACHINE Filed April 30 1925 ,3 Sheets-Sheet 1 INVENTOR ORNE 5 Mmh 2 1926. 5 1,575,559

5 A. B. ELY

TYPEWRITING MACHINE Filed April 50, 1925 s Sheets- Sheet 2 INVENTOR Alon ofl. E9

ATTORNEYS Mafch 2,1926. 17575559 A. B. ELY

TYPEWRITING MACHINE Filed April 30 1925 3 Sheets-Sheet IS INVENTOR ATTORNEY5 Patented Mar. 2, 1926.

UNITED STATES PATENT OFFICE;

ALONZO B. ELY, or eno'ron, NEW roan, ASSIGNOR roconona "rYrnwnrrna con- IPANY, INC. 0F

GBOTON, NEW YORK A CORFOBATIQN OF NEW YORK.

'rYPEwnIrINc-i MACHINE.

To all whom it may concern: i 1

Be it known that I, ALoNzo B. ELY a citizen of the United States, and resident'of Groton, in the county of Tompkins and State of New York, have invented certain new and usefullmprovements in Typewriting Machines (Case No. 193), of which the following is a specification. I

This invention relates to improvements in typewriting machines, and more particularly to the line spacing mechanism thereof. v

The principal objects of the invention are to provide a combined line spacing and carriage returning mechanism which will rotate the platen and return the platen car-- riage by a single operation without acct dental overthrow or excessive rotation of the platen; to provide a simple, light and rugged line spacing and carriage returning mechanism for a low or flat portable typewriting machineof the three-quarter or semi-front strike class so constructed that it may be rapidly and easily operated without collision of the hand of the operator with other parts of the machine; to provide a line spacing mechanism having a horizontally swinging and vertically sliding hand lever of substantial proportions operating a horizontally swinging linelspace pawl formed integrally with a part of the lever and in which said lever exerts a thrust toward the right hand side'of the machine directly against an abutment at the left hand end of the platen carriage during line spacing operations; to provide a line spacing mechanism including a horizontally swinging and vertically sliding hand lever having a fixed line spaceratchet operating pawl thereonand means for positively arresting swinging and sliding movements of said lever whenthe pawl has carried one tooth of the ratchet around the desired distance with said pawl firmly engaged over the leading edge of the next succeeding tooth of the ratchet; to provide a swinging and sliding line space lever carrying a fixed pawland also carrying an adjustable line space regulator for varying the extent of the return sliding movement, of the lever to cause the pawl to rotate the line space ratchet one or two tooth spaces when next operated as may be desired; and to provide a simpleand inexpensive line spacing and carriage" returning mechanism and supportmg means therefor constructed substantially entirely of stamped sheet metal parts forquantity production and which isfadustable to compensate for' inequalities. in manufacture to insure proper coactionof the parts when assembled in a typewriting machine.

Other'advantages of the invention will appear from the appended description in detail of the preferred embodiment thereof illustratedin the accompanying drawings.-

In theldrawings annexed, Fig.1. is an end view of the "platen carriage of the type writing machine showing the line spacing and carriage returning mechanism thereon, the mechanism being shown 1 adjusted for single spacing with the parts in returned or normal position;

Fig. 2 a front view, the parts being positioned as shown in Fig. 1;

Fig. 3 a plan view, the parts being positioned as shown in Figs. 1 and 2; i

Fig. d a detail view showing thehand position of adjustment for double spacing;

Fig. 7 a vertical sectional view of the machine on the line 77 of Fig. 8;

Fig. 8 .a fragmentary plan view of the machine showing the parts at the end of a line spacing and carriage returning opera tion; y

i Fig. 9 a fragmentary end view of the line spacing mechanism with the parts positioned as shown in Figs. 7 and 8;

Fig. 10 a detail view showing the drop of the hand lever and pawl relatively to the ratchet whenthe regulator is rocked from the position shown in Fig. 1 to the position shown in Figs. 6 and 10. to adjust theline spacing mechanism for double spacing;

Fi ll a lan view of the machine cerof Fig. 11, showing the detent and detentreleasemeans in normal position. 7

Onlysomuch of the typewriting machine has been shown as is necessary toa full .understanding .ofthe present invention. The type bars ;1 .of' the machine are pivoted on an arcuate'pivot wire 2 in a type bar segment 3 rigidly secured to the mainframe l of the machine in an upwardly and rearwardly inclined plane. The type bars when at rest extend upwardly and forwardly from their pivots Iand are. supported by a suitable arcuate type rest .5. These type bars are actuated :by suitable key operatedmeans to swing thebars to rearwardly andupwardly inclined printing positions in which the type thereon .engage the platen roll 6 on its upper front quarter, as isusual in machines of the three-quarter or semi-front strike class.

Thep'laten roll 6 is'fiXed-on a platen shaft 7 aextendi'ng through bearings 8 in the end plates 'of'a platen carriaget), the base plate of which is supported in a downward and rearward inclined plane-on suitable anti- :friction devices, as shown, to traveltransverselyof the machineon a carriagebed 10. The carriage bed 10 is supported-on the mainframe in a downwardly and rearward- 1y inclined plane to shift upwardly and rearwardly 'from its normal lowercase po sition shown in Fig. 7 to an uppercase position determined by the engagement of stops 11 on supporting and guiding brackets 12, fixed to the bed adjacent its ends, with stationary stops 1?) held'to the main frame, suitable antifriction guiding *means, as shown in Fig. 7 cooperating with said brackets to cause the carriage and bed to shift in a plane at a right-angle to the. plane of the bed and carriage base'plate. Suitable finger wheels or platen'knobs l fare fixed onthe .endsof the platen-shaft close to the outer faces of the carri'ageend plates. A pair of ribbon spools 15 are rotatably supportedat opposite sides of the system of type barson'the' brackets 16 h'e ld' t'o'the carriage bed adjacent opposite ends "of the bed, said spools :being housed in spool cups 1-7 attached to the brackets 16 and the spools and cups being located above the main frame forward of thepathof travel ofthe carriage and rat substantially the samehorizontal level as the platen roll-6 and the forward ends :of -theeend type bars of the type bar system. A rockable margin-stop-earrying, bar .18 extends "transversely of the ma chine between the end plates of the carriage in rear of and below the platen and is provided with reduced cylindrical end portions or trunnions 19 extending through bearing apertures in said end plates. Said ba-ris adapted to be rocked to release marginstops thereon by a suitable -rock arm fixed thereon. I

The carriage is fed step-by-step from right to left by escapement-dogs, not shown, cooperating with a rack21-on the-carriage .and actuated by a type-bar-operated universal bar -20. Novel -means are provided whereby theplaten maybe. rotated for regular line spacing andthe carriage returned through the medium of a line spacing lever either one line space at a time or two line spaces'ata time, and also whereby the plat- ,en may be rotated in either direction for either regular line-spacing or irregular. line spacing,uas may be desired, which means will now' 'be described.

The inainbody portion of'a sheetrmetal bracket 22 is rigidly'hel'd in anupright-position bya pairof screws 23fiatagainst the outer .face sof the left hand end plate of the platen carriage 9 forward of the platen :shaft,--said screws passing through aper- A'cylindrieal steel bearing post 28--ex tends down through an :aperture '29 in car 26 :and has a reduced threadedlower end portion :28 --screwed through a threaded aperturei30 in ear 27. The apertures 229 and 30 i-are disposed pone idi'rectly abovethe other "in a linefperpendicular to the :base lineof the machineframesothat saidpost extends vertically with itsaxis perpendicular to the axis. of the platen and atzan angle to the plane of the carriage base plate. The reduced threaded portion 28 of the post :is made suliiciently long to permit vertical adjustment of the post relatively tothe bracket by screwing the post up or down,-:the :post being ilockedin adjusted positioniby a lock nut. 81 screwed on part "28 tightly 'up againstathe under face of ear *27. The-post is provided at'its' upper end with a head-.28 adapted to serve as a stop -or abutment to limit :sliding ,movement of the line space lever, ashereinafter described, said head being provided with a screw driver receivingnotch 28 'so-that the post maybe readily adjusted to vary the vertical plane of :said head and also may be readily-attached to and detached from its supporting bracket.

The line space lever swings horizontally about the 'post'28 and-slides :vertically on said post,,-said lever being stamped "from .-sheet--metal and formed at its. rearend with a ful um e ion inthe form of a vertical yoke 32 the superposed end ears or members 33 and 34 of which extendinward in horizontal planes and are provided with hearing apertures 35 and 36, respectively, through which post 28. extends. upright body portion 32 of the yoke-normally lies in a vertical plane extending di rectly fore and aft of the machine, swinging movement of the lever from right to left being limited by engagement of astop lug 37. extending rearward from car 34 with the outer face of arm 24 of bracket 22.

The normal vertical position offthe yokelike fulcrum section of the lever on post 28 may be varied .bymeans of a line spaceregulator. comprising an angular sheet-metal stop lever pivotally held to the outer face of the vertical portion 32 of the yoke by a horizontal pivot screw 38 and having a forwardly extending arm 39. and adepending arm 40 having a curved cam edge 40 at its lower end. Arm 39 ofthe regulator is formed with superposed horizontal lugs 41 at its forward end extending outwardly from its upper and lower edges toform a convenient finger grip, and is formed at its upper and lower edges intermediate its ends'with inwardly extending horizontal stop lugs 42 and 43. The lug 43 is located forward of lug 42 and is adapted to'engage the forward edge of part 32 to arrest the regulator in.

the position shown in Figs. 6 and 10in which the lower cam end'40 of arm 40 is so disposed that ear 34 of the yoke portion 32 may drop down upon ear27 of bracket 22. 'Lug'42is adapted to'engage the "forward edge ofpart 32 to arrest the regulator in the position shown in Figs. 1, 2, 3 and 9, in which the arm 40 isvertical and its lower end extends down below car 34 of the yoke 32 andnormally'engages the top face of car 27 of the bracket. 7 1 Y The line space lever is rocked from right to left by a coiled return spring 44 hooked at one end in an eye 45 punched in part 32 near its 'rear'edge and hooked at its other end in the pierced ear 25 on bracket arm 24. Eye 45 and ear 25 are so disposed that the springextends downward and inward from eye 45 to ear 25 so as to exert a substantial rearward and inward pull onmember 32 to swing the lever from right toleft about the post and also to exert asubsta'ntialidownward pull on said member toassistthe action of gravity in quickly'sliding said yoke member down the post after a linespacing operation. Said eye and ear are also sodisposed that spring 44 will not engage the platen shaft during swinging and upward sliding line space movements of the lever. The cam end 40" of arm 40 permits easy rocking of the regulator from one position of adjustment tothe other, and said regulator is securely but'frictionally held in either adjusted 1 position by a :friction :washer 46 The flat wheel48 is spaced from the inner face of the left hand end plateiof carriage 9 and the pawl extends infront of the ratchet in either position of the regulator in a horizontal plane above the horizontal plane of the platen roll shaft and below the plane of the highest part of the ratchet and preferably overhangs the upper front quarter of the ratchet, as shown. The upper frontpor tion of the left hand end plate of the carriage is cut away asshown at 9 to afford clearance for the pawl and adjacent parts of the line space lever and permit the line spacing mechanism to be compactly arranged between the left hand. end of the platen and the left hand platen knob 14 which is loca'tcdclose to the left hand end plate of the carriage, thus keeping. the transverse dimensions of the machine down to a minimum. One important advantage of the present construction isthat it provides portable machine having an easily operable line space lever of substantial pr0- portions and in which an easily accessible lefthand platen knob is provided without increasing the maximum width of the machine. i v The finger-piece carrying arm of the line space lever in the particular embodiment of the invention illustrated is'divided into two sections, the forward finger-piece carrying section being foldable downwardly to compactthe macine. -Th'is folding. feature of the line space lever isclairned in my copending application Case No. 191. i

Therear section 50 of the lever arm is of angular form and is formed integrally with the fulcrum section of the lever, said section 50 comprising a fiat metal strip bent upward from the forward edge of-ear 33 of the fulcrum section into a vertical plane parallel with the platen axis and then bent forwardly and downwardly into a horizontal pla'neand terminating at a point back of the vertical transverseplane of the rearmost' portions of spool cups-17 to form a short forwardly extending arm portion. This horizontal portion of arm section 50 is formed with a depending ear 51 at its outer zontal portion 53'extending under the horizontal portion of arm section 50 between ears 51 and 52;'and formed at its outer'edge with a depending ear 54 and at its inner edge with a depending ear 55 opposite ear 54, said ears 54-and 55 abutting the inner faces of ears 51:and -52 to prevent side play in the joint. The main portion-56 of the forward lever arm section is disposedin the lowest vertical position of the lever, in a.v

horizontal plane slightly above the plane ofthe tops of the platen knobs and ribbon spool cups 17 from its forward end to a point at or slightly back of the vertical transverse plane of the rearmost portions of cups 17 where it is connected with portion 53 by a downwardly and rearwardly inclined stop portion 57 adapted to travel back :of theleft hand spool cup and normally engaged against the beveled step edge 50 of'reararm section 50*.

The portion 56 of the lever is curved outwardly' or toward the left from its rearend and is provided at its forward end with an integral upstanding finger piece 58, both the portion 56 and finger piece 58 being made dished or concavo-convex in cross-section, as shown,'by a-suitablepressing operation to stiffen the same and provide comfortable hand-engaging surfaces. The out ward curve of part 56 prevents said part and finger piece from obstructing access to the platen in adjusting paper, making erasures, etc. The upturning of the finger piece and elevation of part 56 -above-the level of left hand knob 14, while the remaining portions of the lever and the regulator are disposedto the right of'the fore-and-aft plane of said knob, permit ready access .to the knob. The outcurve ofthepart 56 to the left of the fore-and-aft plane of its pivot also permits travel of finger piece :58 in an are-the chord of which is substantially parallel with the axis'of the platen and the path of travel of the carriage, so'that a maximum eflective return thrust: may be exerted on the carriage and so that there is little or no rearward thrust on the carriage during a line space and carriage return operation. All of these features are of particular importance in a small and light portable typewriting machine. Part 56 is of substantial length so that it travels over 'the'left hand ribbon spool during endwise movements of thecarriage with, the finger piece located well'forward withrespect to the spools and type bars and at a convenient height for operation. The finger piece 58 is located in the same vertical fore-and-aft plane as the left hand platen knob 14: so that the left hand knob 14: may be easily-grasped by passing the hand either under or to the left of the line space lever and'so that the width of the machine is not materially increased by the line space lever.

in normal horizontal position by a ball detent 64 loosely projecting through an aperture 65 in ear -51 andpartly projected into an aperture 66 in ear 54.- bythe free lower end of a fiat spring 67 clamped at its upper end against the outer face of' ear 54 by a screw68. Aperture 66 is of smallerdiam eter than the ball. The lever may be collapsed by forcibly depressing the r forward arm section thereof to force ball 64 out of aperture or socket 66, as' shown in Figs. '4 and 5 and more fully described in my aforesaid copending application. Collapsing movementxof part 56 is limited by. engagement of ear 54'with a stop lug 69 bent inward from'the forward edge of part 32 of the r lever. v

Swinging movement of the line space lever-toward the right is limited by engagementof ear '54-- (which actsas a stop in'normal operation of the lever')jgwitha forwardly and outwardly extending stop lug 70 on bracket 22. Lug 70 is permanently bendable laterally for purposes: of; adjustment to secure the properpoint of. arrest of the-lever, said stop and stop lug-54 being adjusted'to stop swinging of "the lever toward the right simultaneously with engagement ofear 33 with the :post head or adjustable stop 28 to stop upward sliding movement of the lever, as shown in Figs. 7, 8 and 9. Pa-wl 47 is "bendable :permanently either up for -down to insure proper coaction thereof with the ratchet wheel. 5 This'adjustment of the pawl maybe made independently'of or in conjunction with adjustment of the post 28 which is limitedto an'extent less than the thickness of'ear. 34 in order to prevent said ear from engaging under the shoulder on the .post at the upper endof threaded part 28*. J 1

When the regulatoris adjusted as'shown in Figs. 1, 2, 3 and 9, operationof the line space lever will rotate "the platen one full linespace'at atime. Inthis position of the regulator the pawl 47 is normally located at the level shown indotted lines in Fig. 10 and in'full lines in Figs. 1 and 2, and when the leveris rocked toward the right the pawl will first'swing rearward into engagement with the ratchet tooth b and then will continue to swing back carrying the tooth b to the position previously occupied by the tooth-a, the lever sliding upward on the post rear edge of pawl 47 pressed against the fol- V lowing edge of tooth b and the leading edge of the next succeeding tooth 0 firmly engaged under the lower face of the pawl, all as shown in Figs. 7, 8 and 9. There is thus am lock of the parts which positively prevents overthrow or excessive rotation of the ratchet and platen. It will be noted that the leading edge of the pawl moves between positions substantially equal distances foreand-aft of a transverse line through the axis of rotation of the pawl.

If it be desired to rotate the platen two full line spaces at a time, the regulator is rocked to the position shown in Fig. 10, whereupon the lever will slide down the post 28 under influence of gravity and spring 44- until ear 3 1 rests on bracket ear 27, the

"pawl dropping from the position shown in dotted lines to the position shown in full lines where it is closer to the ratchet and in front of thetooth c. If the lever is now rocked, the pawl will swing into engagement with tooth 0 and the lever and pawl will thenrise as the swinging movement of the lever continues until tooth 0 has been moved to the position previously occupied by tooth a, whereupon the parts will jam in the same manner as above described with tooth (Z (Fig 10) engaged under the pawl. The platen is thus rotated two full line spaces and locked against overthrow.

It will be noted that, owing to the shape and mounting of the lever and the arrangement of the parts, when ear 54 engages lug during line spacing operations a substantially direct endwise thrust is transmitted directly from the lever to a fixed part on the carriage whereby the carriage is returned with an easy motion and the pawl and ratchet are relieved of injurious strain and excessive wear. WVhen the lever is released after being rocked toward the right, the spring 4 1 aided by gravity will rock the lever toward theleft until stop 37 engages bracket arm 24: and simultaneously slide the lever downward on the post until its downward movement is arrested by either the regulator stop arm 40 or the ear 34 engaging bracket ear 27, depending upon whether the regulator is set for single or double spacing. To prevent back lash of the ratchet and to insure proper positioning of the ratchet and platen and holding of the same against accidental movement with the printing line at the proper point I provide a suitable detent device.

The detent device comprises a swinging sheet metal arm 71 loosely pivoted at its rear end on the left hand trunnion 19 of the i margin stop bar 18 so as to swing independently of said bar, said arm extending forward and upward substantially tangential to the ratchet wheel 48 and carrying an inwardly extending trunnion 72 at its forward end on which is journalled a steel roller 73 normally yieldably held between two adjacent teeth of the ratchet by a coiled spring 74. The arm 71 lies in a plane between the ratchet and the left hand endg plate of the carriage which areclosely adjacent, the arm having an upstanding finger 75 at its forward end confined between the ratchet and end plate and being confined at its rear end between the end plate and margin release rock arm 82 to prevent undue side play of the arm and roller. A downwardly and rearwardly extending groove 76 is formed in the inner face of the left hand end plateof the carriage, said groove extending to the-bottom of said plate opposite a notch or recess 77 cut out of the left hand end of the carriage base plate. A finger 78 extends downward and forward fromarm 71 into said notch and the spring 74. is housed in said groove, the

lower end of the'spring being attached to said finger and the upper end of the spring being attached to the inner endof the uppermost fastening screw 23 of bracket 22 which projects into said groove near the upperend of the groove. j i

The arrangement of the detent device is such that the platen may be rotated for finger piece, said body portion of the lever normally resting on the top edge of arm 71, the lever being held in normal release position solely by gravity. By rocking the lever 81 upward and forward cam will regular line spacing in either direction by be caused to depress the roller carrying arm to free the roller 73 from the ratchet after which the flat edge 80 of the cam will engage flat against the upper edge of arm 71 and the parts will be locked in detent re leasing position. The platen may then be rotated in either direction any desired extent by turning the platen knobs. It will be noted that the detent and detent release.

means are of exceeding simple, inexpensive, light and compact construction and are compactly arranged with relation to the carriageand platen in suchmanner asv to keep, thewidth of the carriage at a minimum. WVhat I: claim is:

l..In a typewriting machine, the-.combi nationv ofia platen carriage comprising base and end plates, means for supporting said. carriage to travel transversely of the machine, in a .rearwardly tilted position, a

.platen roll havinga shaft journalledin and the, outer faces. ofthe, end plates, a bracket held against theouter .face of theleft hand endpplateof. thecarriage and formed with f a, pair of superposed outwardly projecting ears in a vertical planeforward of. the roll shaft and an, arm extending. rearwardly under said shaft, a vertical bearing post stationarily supported in said i ears. .and having ahead located abovethe upper jear,.a .line spacell'everhaving a vertically disposed bearing portion formed with aIpair of super: posed "ears located respectively aboveand below the. upper bracket ear and through which. said post loosely extends. with. it'shead normally spaced above. the upper lever ear, said lever having ,a handle portion extendingforwardly from its bearing portion and carrying an upstanding finger piece at its forwardend, said handle portion extend ing rearwardly from the finger piecein a horizontal plane above the level of the finger wheels and ribbonspools to a'point in the. rearof thetransverse plane of. the rear edges of the spools, afixed pawl extending inwardly from the bearing portion of. the. lever in front of the ratchet wheel, a coiled return spring extending downward and rearwardly under the-platen. roll shaft andconnected with the bearingportion of said lever and saidbracket arm to rock the lever outward and slide it downward, a stop on the bearingportion of the lever adapted to engage ,said bracket arm for arresting outward swinging. of the lever with, the finger. piece in the fore-and-aft plane of the left hand finger wheel, andcooperating stops on the bracketand handle portion ofthe lever. forarrestinginward swinging .of the lever afterinovement of the finger piece, through an arc the, chord, of which 'is substantially parallel with the path of travel of the. car- 'riage, said post head beingdisposed to be engaged by.v the upper earw onv the, bearing portion of the lever to arrest upward slid ing movement of .theleveron thepost simultaneously with arrest of inward swinging.

of the lever, and. said bracket and. the bearof the plane of the inner face, of the.

ingportion of the lever being locatedinside left amlfi gen whee 2.'In a typewriting machine, the combi-.

nation of a platencarriage, ribbon spools; located forward of the carriage, means sup: porting the carriage to travel transversely of the machine, a platen roll having a shaft journalled inthe carriage, a finger wheel on. the left hand end of said roll shaft, beyond but close. tothe left hand end of the. car

riage, a, stationary vertical post heldsto th e carriage in a fore-and aft v plane betwce i.

the; foreand-aft. planes, of the finger, wheel and left handend of the carriage, a line, space lever slidably, and "p ivotally heldjatr its rear end to said post and having a nors mally outwardly and, forwardly extending portion disposed horizontally. in a plane above the plane, of the ribbon, spools 'and, linger. wheel and provided: at its forwardend with an upstanding finger-piece located 1n a vert cal transverse plane. forward of the plane of the rearmost parts of; the spools, aratchet wheel held to; rotate with the platen, afixed pawl on said leverlextending inwardly in front of said ratchet wheel, a spring for swinging, said; leveroutward. swinging of said lever withlsaid finger. piece.

outwardly, means, for arrestin substantially in, the-fore-andnft plane of the finger wheel, and; means for arresting inward swinging and upward sliding movements of thelever,aftermovement ofthe,

finger, piece through an. arc, the, chordof which is substantially parallelnvith the pathv of travel of'thecarriage.

3. In a typewritingmachine, the combination ofv a platen. carriage, ribbonspools located forward of the. carriage, means. sup: porting the carriage to. travel transversely of the machine, a platenroll having a shaft journall'ed in thecarriage, a finger wheel on the left hand end ofsaidroll shaft beyond butclose to. the; left. handjend of. the carriage, a: stationary vertical post held to the. carriage in. a fore-andz-aft; plane between.

the forerand-iaft planes, ofthe finger wheel and. left. hand. end of, the. carriage, a, line. space leverslidablyand pivotally held'at its rear end to.,saidpost and. having. an; out? wardly. and forwardly extending portion disposed. horizontally .in; a. plane above the. planeof-the ribbon spools. and finger wheel.

and; provided atits. forward. end with an.

upstanding, finger piece. located :in a vertical transverse. plane. forwardv of. the plane ofthe .rearmost parts. of the, spools, a ratchet,

wheel. held to rotate with the platen, a. fixed pawl onsaid leverextending inwardly in front of said ratchet wheel, agspringfor swinging said lever.outwardly, means. for... arresting outward swlnglng. of said lever with said finger piece substantially inthe fore-and-aft planeofthe finger wheel, and;

means forarresting inward] swinging and upward sliding movements of the lever after movement ofthe finger piece through an arc the chord of which is substantially parallel with the path of travel of the carriage, said pawl and ratchet wheel and said lever arresting means being so arranged that said pawl will engage and push avtooth of the' ratchet wheel to a predetermined point during inward swinging and upward sliding of the leverand will be positively arrested when said tooth reaches said point with the next following tooth of the ratchet wheel engaged under the pawl.

4. 111 a typewriting machine, the comb1- nation of a platen carriage having end,

extending forwardly under :the roll shaft along the inner face of the left hand end,

plateof the carriage, a trunnion extending inwardly from the forward end of said arm under the ratchet wheel, a detent roller on said trunnion, said left hand end plate havinga groovein its inner face extending in an up-and-down direction, a coiled spring housed in said groove and secured at its upper end to the carriage and at its lower end to said arm and yieldingly urging said roller between adjacent teeth ofthe ratchet wheel, and a lever and pawl device mounted on the carriage for rotating said ratchet andlocated substantially in its entirety between the fore-and-aft planes of said finger.

and ratchet wheels.

5. Ina typewriting machine, the combinatlon of a platen carriage having end plates, a platen roll extendingclose to the, left hand end plate of the carriage, a shaft- Lonwhich said rollis mounted journaled in and extending through the carriage end plates, a finger wheel on the left hand end. of said shaft closeto the outer face of the adjacent end plate of thecarriage, a line space ratchet wheel locatedbetween the left hand end plate, of the carriage andthe; adjacent end of the platen roll and held to rotate with said roll, an arm pivotally supported at its rear end on the carriage and extending forwardly underthe roll shaft along the inner face of theleft hand end said trunnion, said left hand end platehaving a groove in its inner face extending in an up-and-down direction, a coiled spring housed in said groove and secured at its upper end to the carriage and at its lower end to said arm and yieldingly urging said roller between adjacent teeth of the ratchet wheel, a lever and pawl'device mountedon the carriage for rotating said ratchet and located substantiallyin its entirety between the .fore-and-aft planes of said finger and,

ratchet wheels, said pivoted roller carrying arm extending substantiallytangentially to said ratchet wheel, and a detent roller release-lever pivotally held to the left hand end plate of the carriage against the inner face of said plate having a rearwardly extending handle portion normally seated by gravity on the upper edge of said pivoted arm and provided with a cam portion forward of its pivot for depressing said arm upon upward and forward swinging of its handle portion.

6. In a typewriting machine, the combi nation of a platen carriage having end plates, a platen roll journaled in the end plates of the carriage, a line space ratchet wheel located between one end of the platen roll and the adjacent end plate and held to rotate with? the roll, said lastmentioned plate having a groove in its inner face ex tending in an up-and-down ClllGClllOIl, a pawl and lever mechanism for rotating said ratchet wheel, a bracket supporting said mechanism, screws for holding said bracket to the outer face ofsaid grooved end plate one ofwhich projects into the upper end of said groove, a margin stop bar at the rear of the platen roll supported at its ends in the end plates of the carriage, an arm pivotally held at its rear end to said bar and extending forwardly along the inner face of said grooved plate below the axis of the platen, a trunnion on said arm extending under the ratchet wheel, a detent roller on said trunnion, a coiledspr ng housed in the groove in said plate secured at its upper end to the bracket fastening screw project'- ing into said groove and connected at its lower end to said arm to. yieldably urge the rollerbetween teeth of said ratchet, adetent release lever pivotally held to said grooved end plate above, the pivoted arm and having ahandle portion normally seated by gravity on said arm and a cam portion adapted to depress saidarm, said cam portion having a fiat face adapted to engage the upper edge of the arm after the detent roller is freed from the ratchet wheel to lock the roller in released position.

7. In a typewriting machine, the combina nationof a platen carriage, a platen rotatably mounted on the carriage, means supporting the carriage to travel transversely of the machine, a ratchet wheel held to rotate with the platen adjacent theleft hand movement of a tooth of the ratchet wheel.

end of the platen, a line-spacing and carriage-returning leverextending fore=ande aft of the machine, means supporting said leverat its rear end onthecarriage adja cent the-left hand end of the carriage forlateral swinging and vertical sliding move ments relatively to the carriage, a fixed pawl on saidslever extending inwardly in front of said ratchet! wheel, a; return spring for said lever, means for determining the position to which said-1 lever is returned, and means for arresting inward: swinging and upward sliding movements of saidlever aftert said pawl has advanced a ratchet tooth to a predetermined pointat whiclr the under face of said pawl is engaged by the next following tooth: of the ratchet wheel;

8. In atypewritin machine, the combination-Lot a platencarriage, a platemrotm tahly mountedon the carriage, means sup porting the carriage to travel transversely of r the machine, a ratchet wheel held to-rotate with the platen adjacent the left-hand end'of the-platen, a line-spacing and ca-r' riage-returning lever exteniiling forea-nd aft of themachine, meanssupporting said; lever atrits rear end onthe-carriage adja-' cent the left hand end of-thegcarriagefor lateral swinging and verticalmsliding movements relatively to the carriage, afixedp a-wl" on said lever extending inwardly in: front of lever, means for arresting inward swinging and upward sliding movements of said lever after said pawl has advanced a ratchet tootlr to a predetermined pointiatgwhich the under face of said pawl is engaged by the next' following vtooth of the ratchet wheel, means for varying the initial. level ofthepawl relatively to the ratchet to causethe-pawlto en-- gage either ofitwo successive-ratchet teeth,

and means for arresting outward swinging movements of the lever.-

9. In a .typewritingmachine, a platenzcarriage, a platen journalled on the'carriage, a ratchet wheel held to: rotate with th'e platen, v a line space lever, a fixed pawl on the lever for rotating-the ratchet wheel and holding the same againstoverthrow, means for pivotally and sli'dably supporting the lever-on the carriage, stop means limitingswingingflmovements of the lever-to an arc of nni-= form length, means for -varying the initial position, of the leverilengthwise of its-piw otal axis-to position the awme engage either of two successiveteeth 0t the-ratchet, and means for arrestingsliding movement of the lever when swinging movement ofthelever in linefspacing direction is arrested with said fixed pawl obstructing advance 10; In a typewriting machine, a platen-' carriage, a platen-j ournalled on the carriage; aratchet wheel held torotate with the platen, a line space lever, a -fixed pawl on the its =piv'otal axis to position' the pawl to engage either of two successive teeth of' the ratchet, and means for] arresting sliding movement oi the lever when SW1-I1gH1g 1I10Vement" 01 the lever line-spaeing, dime-- structing advance inovement of a tooth-oi the ratchet wheelsaid pawlbeing. adjustable relatively to= sai d lever.

'11. In a typewri-ti'ng machine; aplaten carriage, a platen-j ournalled on the carriage;

aratchet wheel I held t0 rotate; with the platen, a li ne space lever, a fixed pawl on the lever tow rotating the rateh'etrwheel and holding the same against overthrow, meansfirm pi'vetally and-'2 slidably 1 supporting the lever on the -carri=age,- stop'means limiting swinging movements' oli the lever to an 1 are of 3 unifornr A length, means for varying the initial posi tiozr of the lever' lengthwise of its 1 pivotal 1 axis to position: I the pawl to' engage eithe of 'two successive teetlr of theratchet',

and means for arresting slidingmovement=of' the lever: when swinging I movement of the said-ratchet wheel, a returirspring for said,

lever in line-spacing"direction is arrested with-said fixed: pawl obstructing advance movement Lot a tooth "of thera-tehet wheel, said smean's for arresting sliding andswingindependently adjustable lever for 1 rotating the -ratchet wheel and holding the same-against" overthrow; means 4 for pivotally and slidabl-y sup'porting'the lever=on i the, carriage, stop means limiting swinging movement's of the lever to an arc-' otunifornr length, means forvarying "the-1 initial position of" the '-lever'- lengthwise of its p-i=votal axis to-=position the" pawl to engage either of twosuccessive teeth of the ratchet, means for arresting slidingmovement of the lever when swingingmovement of theleve-r in line-spacing"direction is arrested with said fixed pawl obstructing ad-.1

vance movement of a tooth of"the--rate'het' wheel, and a return spring arranged to simultaneously swing and slide saidlever on its pivot to its starting point upon release of the lever after a line spacing operation thereof;

13; Ina typewriting' machine, a platen:

carriage, a platen-journalled on r the carriage; a ra'tchet wheel held to rotate with' the pIaten; a linespaeedevra'r; ar -fixed pawl ing movements of the pawl at the end of the line spacing movement ot the-lever being" on the lever for rotating the ratchet wheel and holding "the ,sa'in e against overthrow, means for pivotally and slidahly snpporting the lever on the carriage, stop means limiting swinging inoven'ients of thelever to an arc of uniform length, means for varying the initial position of the lever lengthwise of :its pivotal. axis to position the pawl to engage either of two successivetecth of the ratchet, and means for arresting sliding movement of the lever when swinging movement of the lever in linespacing direction is arrested with said fixed pawl obstructing advance movement of a tooth of the ratchet wheel, said means for varying the initial position of the'lever lengthwise of its axis comprising a regu lator stop pivotally held to the lever for engagement with an abutment on the carriage and means forholding said stop in different pivotally adjusted positions.

14. In a typewriting'machine, the combination of a platen carriage, a platen journalled in the carriage, avertical hearing post on the carriage adjacent the left hand end thereof, a ratchet X7l1861-2t(lj10011l7 the left hand end of the platen and held to rotate therewith, a "line space lever pivotally and slidably supported at its rear end on said post and having a forwardly extending handle portion, a fixed pawl extending inward from said lever in front ofthe ratchet wheel, cooperating stops on ing post on the carriage adjacentthe left hand end thereof, a ratchet wheel adjacentthe left hand end ofthe platenand held to rotate therewith, a line l-s'pace lever pivotally and slidably supported at its rear end on said post and having a forwardly extending handle portion, a fixed pawl extending inward from said lever in front of the ratchet wheel, cooperating stops on said lever and carriage for arresting outward swinging of the lever at a uniform point, cooperating stops on said lever and carriage relatively adjustable for varying the normal level of the lever and pawl to cause the pawl to engage ratchet teeth located at different levels, cooperating stops on said lever and carriage forward ofthe transverse plane of-said bearing post for arresting inward swinging movements of the lever at "a "uniform point, and cooperating means on said lever and :post for ariresting upward sliding movements of the lever at a uniformpoint, said inward and upward movement limiting means being so disposed as to arrest the fixed pawl at a point at which its under face engages over a tooth of theratchet wheel to positively stop rotation of the ratchet wheel and platen.

16/111 a t ypewriting machine, the cornbination o-f'al platen carriage, a platen journ'alled in the carriage, a vertical bearing post on the earriageadjacent the'l'eft hand end tl'lereof, ratcl'iet wheel adjacent the left lrandendof'the'platen and held to rotate therewith, line' space lever pivotally and slida'bly supported at its-rear end on said 1 post and having a forwardly extending handle portion, afixed pawl exteiiding inward from said lever in frontof the ratchetfwheel, cooperating stops on said lever and carriage for arresting outward swinging of thelever at a unifor'mpoint, coop erating stepsonsaid'lever and carriage relatively fadn' stahle for -varying the normal level of the lever and pawl to cause the pawl to engage ratchet teeth located at different levels, cooperating stops on said fleverand c a'rri ai e forward of the transverse plane of said bearing post for arresting inward swinging movements of the lever at a uniform "point, and said means for Zliniiting outward and inwardswinglng lever tern 30 disposed that the lever swin s in anf are the chord of which is. s ihstantially parallel with the path of travel of the carriage.

17, In a typewriting yinachinmthe comhination ofaf platen carriage, a platen joinnailed 1n the carriage adgacent the lefthand end thereof, aratchet'wheel'a'dj ac'ent the left hand end of thegplaten and held to rotate therewith, a line space lever pivotally and slid-ably supported at its rear end on said post and "having a j forwardly extending 'handle'po rtion, fixed pawl extending iii-- ivarctfrom sa'id lever in front or" the ratchet wheel, cooperatil'ig stops on said I lever "and carriage for arresting outward swinging of thelever at nniformpoint, cooperatii'rg stops onsaid'leverand carrie e relatively adjustable i for vzirying the normal level of the' le'ver andpawl to cause the pawlio engage ratchet teeth located latklifferent levels, and cooperatingstepson said lever and carriage 'fOlWVtlld of the transverse plane of'said hearing post'for arresting inward swinging movements "of the lever at a uniform point, said lever and pawl andsaid movement limiting means heing'so arranged that the lea din-gedge of the pawl travels substantially equal distances for and aft of the "transvers vertical-1 lane ofthe bearin post and sardlever'swings through aniare the chord of which is substantially parallel with the path of travel of the carriage.

18. In a typewriting machine, the combination of a platen carriage, a platen journalled in the carriage, a vertical bearing post on the carriage adjacent the left hand end thereof, a ratchet wheel adjacent the left hand end of the platen and held to rotate therewith, a line space lever pivotally and slidably supported at its rear end on said post and having a forwardly extending handle portion, a fixed pawl extending inward from said lever in front of the ratchet wheel, cooperating stops on said lever and carriage for arresting outward swinging of the lever at a uniform point, cooperating stops on said lever and carriage relatively adjustable for varying the normal level of the lever and pawl to cause the pawl to engage ratchet teeth located at different levels, cooperating stops on said lever and carriage forward of the transverse plane of said bearing post for arresting inward swinging movements of the lever at a uniform point, and a coiled returnspring connected at one end with the lever at a point outside of the .fore-and-aft plane of the bearing post and extending downward and rearward and inward from said lever and connected at its other end with a fixed part on the carriage.

19. A line-spacing ratchet operating means comprising a bearing post support, a bearing post mounted on said support having a head at one end, a line-spacing lever having a yoke-like bearing portion slidably and pivotally held to said post, a line space pawl rigidly held to said lever, cooperating abutments on said lever and support for limiting the swinging move ments of the lever to arcs of uniform length, one arm of the yoke portion of the lever cooperating with the post head to limit sliding movements of the lever when rocked in line-spacing direction and the other arm of said yoke portion being adapted to engage said post support to determine one initial starting point of sliding movement or the lever, and means on said yoke portion of thelever adpistable to engage sald support and thereby prevent said last mentioned yoke arm from engaging the support to determine another initial starting point of sliding movement of the lever. I

20, A line spacing ratchet operating means comprising a bearing post support, a bearing post mounted on said support having a head at one end, a line-spacing lever having a yoke-like bearing portion slidably and pivotally held to said post, a line space pawl rigidly held to said lever, cc-

7 operating abutments on said lever and support for limiting the swinging movements )f the lever to arcs of uniform length, one arm of the yoke portion of the lever cooperating with the post head to limit sliding movements of the lever when rocked in linespacing direction and the other arm of said yoke-portion being adapted to engage said post support to determine one initial starting point of sliding movement of the lever, means on said'yoke portion of the lever adjustable to engage said support and thereby prevent said last mentioned yoke arm from engaging the support to determine another initial starting point of sliding movement of the lever, and means for adjusting the post axially relatively to the support.

21. A line spacing ratchet operating means comprising a bearing post support, a bearing post mounted on said support, an abutment member on said post, line spacing lever having a yoke-like bearing portion slidably and pivotally held to said post, a line space pawl rigidly held to said lever, cooperating abutments on saidlever and support for limiting the swinging movements of the lever to arcs of uniform length, one arm of the yoke portion of the lever cooperating with the abutment 111cm her on the post to limit sliding movements of the lever when rocked in line spacing direction and the other arm of said. yoke portion being adapted to engage said post support to determine one initial starting point of sliding movement of the lever, means-on said yoke portion of the lever adjustable to engage said support and thereby prerent said last mentioned yoke arm from engaging the support to determine another initial starting point of sliding movement of the lever, and a coiled return spring connected with said support and the yoke portion of the lever. I

22. A line space ratchet operating means comprising a yoke-like sheet metal bracket adapted for attachment'to a platen support, a bearing post extending through the arms of said bracket and stationarily held thereto, said post having a head at one end outside -of said yoke bracket, a sheet metal line-spacing lever having a yoke-like bearing portion slida-bly and pivotally mounted on the post with its arms straddling the bracket arm nearest the post head, said lever having a handle portion perpendicular to the post provided with an integral stop lug adapted to engage the bracket for limiting swinging movement of the leveriin line spacing direction, a ratchet operating pawl formed integrally with one arm of the yoke portion of the lever and extending therefrom substantially perpendicular to said post, a stop lug formed integrally with one arm of the yoke portion of the lever adapted to engage said bracket to limit return swing of the lever, the arm of the yoke portion of the lever nearest the post head cooperating with the head to limit sliding of the lever in one direction, and a line-space regiilator adjustabl; held to the,yoke-portion of the lever shit'table to onejposition in which limits sliding movement said yoke portion away from the post head and to another position in which the arin o t said yoke portion farthest tromthe post head cngag ssaid bracket arm farthest from the post head to limit such sliding movement of: the lover. a I r v p In a typeivriting machine, the coin bination of a platencarriage, a platen journalled on the carriage, a ratchet heel held to rotate 'ith the platen adjacent the left hand end thereof, a sheet metal bracket held to the left hand end of the carriage pro vided with superposed spaced horizontal cars, a vertical bearing post held stat-ionarily in said earsia horizontally swinging sheet metal line-space, lever having a vertically disposed yoke-like bearing portion at itsrear end slidably and pivotally held to said post vith it-sarins straddling the upper ear of the bracket and spaced therefrom, a pawl formed integrally with the upper arm of the bearing portion of the lever and extending inwardly in front of the ratchet Wheel, a return spring connecting said bracket and bearing portion ofthe lever to swing the lever outwardly and slide it. downwardly, means for arrestingout- Ward swinging of the lever at a uniform point, means whereby the normal vertical position of: the lever may be varied, means for arresting inward swinging of the lever at a uniform point, and means on said post cooperating with the upper arm of the hearing portion ottlie lever tov arrest upward sliding ofthe lever at a uniform point.

ln a typewriting machine, the combination oia platen Cit1i?l'ltlg6,-,2lplaten journailed on the carriage, a ratchet-Wheel held to rotate with the platen adjacentthe lett hand end thereof, a sheet metal bracket held to the left hand end of the carriage provided with superposed spaced horizontal ears, a vertical bearing post held stationarily in said ears, a horizontally swinging sheet metal line-space lever having a vertically disposed yoke like hearing port-ion at its rear end slidably and pivotally held to said post with its arms straddling the upper ear of the bracket and spaced therefrom, a pawl formed integrally with the upper arm of the bearing portion. of the lever and ex tending inwardly in front of the ratchet wheeh a return spring connecting said bracket and bearing portion of the lever to swing the lever outwardly and slide it downwardly, an integral stop lug on the lower arm of the hearing portion of the lever ada ted to engage the bracket to limit out-c Ward swinging of the lever, an integral lug on the forwardly extendlng arm of the lever adapted to engage the bracket to limit inwa r d s regulatoradj iistabl'y held to the hearing portion of tlie'levr and shift/able het veen two positions in one ot' which the lower arn'ijo't said bearing portion is adaptedto engage the'loiverear of the bracket to limit downard movement ofthe lever and in the other of \vhichsaid regulator eng ages said bracket ear to arrest the leve r in a higher position, and means on said post adapted to be on gaged by the upper arm at the bearing portion of the lever to arrest upward movement of the lever.

25.- In a portable typewriting nnrchine the combination of a platen carriage, a platen having a shaft journalled on the carriage, ineans supporting the carriaige at a low level to travel transversely ot the machine, ribbon, spools located forward o't the path of the travel of the carriage and at substani tially the same level as the platen, a line space ratchet Wheel adjacent the left hand level-T a 11in end. of the carriage held to rotate with the platen, a vertical bearing post held to the left hand end of the carriage forward of the platen shaft and in the rear of the spools, a line space lever having a vertical yoke-like bearing portion slidably, and pivotally mounted .on said post and adapted to travel behind the left hand spool and a forwardly extending horizontal handle portion connected with said yoke-like portion and disposed at a level above the spools and traveling over the left hand spool and provided with an upstanding finger piece at its forward end, a fixed pawl on said lever e: :tending in \vardly in "front of the ratchet heel, and means "ndependent of said pawl and ratchet vWheel ior arresting inward swinging of the lever.

26. In a port-able typewriting machine, the combination ota platent carriage, a platen having a shaft journalled onthe carriage, means supporting the carriage am lowlevel to travel transverselyot themachine ribbo' spools located torward'ofthe path of travel 01. the carriage and at substantially the same level as the platen, a line space ratchet Wheel adjacent the left hand end of the carriage held to rotate with the platen a vertical bearing post held to the left hand end of the carriagetorivard of the platen shaft and in the rear of the spools, a line space lever having a vertical yoke-like bearing portion slidably and pivotally mounted on said post and adapted to travel behind the left hand spool and a forwardly extending horizontal handle portion connected with said yoke-like portion and disposed at a level above the spools and traveling over the left hand spool and provided with an upstanding finger piece at its forward end, a fixed pawl on said lever extending inwardly in front of the ratchet Wheel, and cooperating-abutments on said carriage and lever forward of saidpost for positively arresting inward swinging of the lever and transmitting endwise thrust toward the right to said carriage from said lever.

27. In a line spacing mechanism, the combination of a rotatably supported ratchet wheel, a combined line-spacing and overthrow preventing pawl cooperating with said wheel and normally extending across the edge thereof, a hand lever to which said pawl is rigidly held, means for supporting and guiding said lever so as to impart to said pawl a swinging movement about an axis perpendicular to the axis of the ratchet wheel and a motion of translation parallel with the axis of said swingingmovement when the lever is actuated to engage the pawl with the ratchet, and means for preventing further pivotal and translational movement of the pawl after the same has engaged and advanced a ratchet tooth to a fixed point around the axis of the wheel at which the next following tooth of the ratchetwheel is engaged against the arrested pawl.

28. In a line spacing mechanism, the combination of a rotatably mounted ratchet wheel, a pawl extending across the wheel, means supporting said pawl for swinging movement and movement of translation about and along an axis perpendicular to the axis of the ratchet wheel, means for forcing said pawl against a teeth of the wheel to advance the wheel, and means for stopping pivotal and translational movement of the pawl when 'it has advanced said tooth to a predetermined point circumferentially of the wheel at which said pawl is engaged by the next following tooth of the wheel to obstruct further advance of the wheel.

29. In a typewriting machine, a traveling platen carriage, a platen journalled on the carriage, an arcuate system of type bars pivoted in an are below and in front of the carriage and normally extending upward and forward from their pivots and arranged. to strike on the upper front quarter of the platen, a line space lever having an operating arm extending forwardly of the carriage at a level slightly above the, level of the type carrying ends of the end bars of the type bar system and terminating in a finger piece ata point back of the type carrying ends of the bars, means operable by said lever to rotate the platen, and means supporting said lever on the carriage adjacent the left hand end of the carriageto swing toward the right and slide upwardly when actuated to operate the platen rotating means.

30. In a typewriting machine, a trave ing platen carriage, a platen journalled on the carriage, an arcuate system of type bars pivotally supported at their rear ends to strike on the upper front quarter of the platen, a pair of ribbon spools supported at opposite sides of the system of type bars between the path of travel of the carriage and the vertical transverse plane of the free ends of the end bars of the type bar system, said spools and the forward ends of the end type bars being located at substantially the same level as the platen, a line space lever having an operating arm normally extending forwardly of the carriage at a level slightly above the level of said spools, and

adapted to travel over the left hand spool,

means operable by said lever to rotate the platen, and means pivotally and slidably supporting said lever on the carriage adjacent the left hand end of the carriage to swing toward the right and slide upwardly when actuated to operate said platen rotating means, whereby the clearance between the operating arm of the line space lever and the left hand spool and end type bars is increased upon a line space operation of the lever.

In testimony whereof I hereunto affix my signature.

ALONZO-B. ELY. 

